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Class VI
Class VII
Class VIII
Class IX
Class X
CBSE Grade VII - Exponents and Powers
Question
1
1.
Which of the following statements are true?
a)
x
m
x
n
=
x
m
n
b)
(
x
m
)
n
=
x
(
m
+
n
)
c)
(
x
m
)
n
=
(
x
n
)
m
d)
a
.
x
m
=
a
m
.
x
m
e)
a
m
.
a
n
=
a
m
n
f)
a
0
=
1
(
a
≠
0)
{a,c}
{c,f}
{d,e,c}
{a,f,c}
{b,f}
Question
2
2.
p
(-7)
4
u
(-8)
=
p
8
4
u
7
u
(-8)
4
p
(-7)
u
8
4
p
7
4
u
(-8)
p
(-7)
4
u
8
p
7
Question
3
3.
The value of
(-3)
-2
÷
(-2)
-2
2
9
4
7
2
(
4
9
)
2
3
4
9
Question
4
4.
Expand the following base power
(-4)
-5
(
-1
1024
)
1
4096
(
-1
32
)
1
256
(
-1
7776
)
Question
5
5.
Find the exponential notation of
96
49
2
5
✕
3
7
2
2
6
✕
3
7
2
2
5
✕
2
7
2
2
5
✕
3
4
2
2
5
✕
3
9
2
Question
6
6.
Find the exponential notation of
-3
✕
-3
✕
-3
✕
-3
✕
-3
✕
-3
✕
-3
✕
-3
(-3)
8
(-3)
7
(-1)
8
(-5)
8
(-3)
9
Question
7
7.
Simplify the expression
7
(
-7
9
)
✕
6
(
-7
9
)
✕
6
(
-7
9
)
19
(
-5
9
)
(-1)
19
18
(
-7
9
)
19
(
-7
9
)
20
(
-7
9
)
Question
8
8.
Simplify the expression
6
7
✕
2
7
12
7
9
7
15
7
12
6
12
8
Question
9
9.
[
-4
(
8
7
)
✕
-4
(
3
4
)
]
÷
[
4
(
7
8
)
✕
4
(
4
3
)
]
=
1
0
3
4
8
7
(-1)
Question
10
10.
Simplify the expression
6
-2
✕
6
-2
3
-4
6
-4
9
-4
6
-3
6
-5
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